I wish I had a plot of voltage on the X-axis and danger level on the Y-axis for AC and DC.
I was talking to an engineer at work, he was telling me that DC is more dangerous at high voltage. I said I disagreed with him but did not do into detail as to why I thought so. I did say that I've...
Okay, so I am trying to understand the method of sections so I can finish my homework. I look at http://en.wikibooks.org/wiki/Statics/Method_of_Sections" [Broken] and for the life of me, I can't understand why at the bottom of the page it says Fy=0=2T2 - 981 .
Where does the factor of 2...
Its been a while since I've been on here. I moved to the Portland area, and was wondering if there was any more people from this forum in or around Portland? Oh yeah- I'm geeky again now...
I'm just looking to see if any PF members want to hang out some time.
Should I look in another...
Hello everyone, long time no see :)
I hope this would be the correct forum to post in .. I haven't been here in a while so I don't know if this topic has already (probably surly has) been discussed.
What does the chemists, physicist or engineers think about his video...
okay so the people who swap have a similar slice missing?
Yes, I failed to see what this has to do with math also. Hence my question.
What it does have to do with math, I was having a difficult time comprehending. So I wanted to get a quantitative analysis as to what was actuaclly...
I figured out what happened on the first post... when I made it a hyper link, I thought I had screwed because the url was there twice. It was actually there for the hyperlink text.
So I still had the hyperlink there (as I found out when I edited my post) , but there was no hyperlink text so...
Maybe I will get it eventually, but I"M STILL TRIPPIN! on this one. It is very clever. I'm just still having a difficult time visualising the appearance / dissapearence ot the extra person!:grumpy: :yuck: :cry: :uhh:
my bad!
my original post had this link, but the site was having problems and i scuffed my post up upon redsoig it.
I understand the triangle problem. the illusion that was bother me was this one:
http://www.ebaumsworld.com/images/illusioncount.gif" [Broken]
I was thinking it might work...
yah, there was i a much better example i remember, but maybe I'm just imagining that? Maybe it was just a long time ago and it was impressive back then.
I'm still stumped by this people illusion as of now.
Hello everbody, long time no see!
I hope this is the right forum for this, I'm not ready to post it in the topology forum:cry:
Okay, so I saw this neat optical illusion. It really started to bug me as I was playing around with it in paint trying to figure it out...
the go to guy:
If you're really serious about making this train for a science project, why not do something easier this year, and have the train be an early start on a project for next year?
I think these can all be solved using the ideal gas law, pv=nrt
Since you didn't ask specificly for direction and have shown no work, this is about the most help you can expect to get here.
Hint:
and the answer is in another problem:
Oops, I missed the part about the corner cut out...
I guess its back to x_bar y_bar in the first place then...
Well, it could still be done the way I was suggesting, don't know if its any easier though...but the point was to take out all area symmetrical about both axis, to simplify the...
Here is an easy way to think about it.
Cut the circle out of the remaining 3 quarters of the large square, now you have a symmetrical shape about both x and y axis. The center of mass is the center, so we can now ignore this part.
Now what is the center of mass of the 3 circles?
Here I am chillin and relaxing ( chillaxin) with my dog. Taken about 2 and a half years ago.
http://home.earthlink.net/~avp/smokedawg.jpg [Broken]
http://home.earthlink.net/~avp/chokedawg.jpg [Broken]
The vampire Monique is nice, but the pirate one is really funny!
Okay, so we have the tabular method, where [inte]vdu zero's out and we arrive at the the answer. Is there a name for the other case of IBP, where we will end up with some value 2([inte]udv)=(some known value ) ?
Oops, my bad.
I've looked at the mathworld site, many time actually.
It turns out this problem stems back a few years, and I just realized its not factorial I'm actually wondering about (tried it on my TI-89)
Okay, here is there real problem then. My calculator will give sums for...
I don't know if this is the right place for this question, but here it goes.
Could someone explain how I would go about solving for x of x=(5/6)!
Thanks
NaSO4 dissociates 4 times, so you get 4 times the hydronium ions when it completely dissociates as compared to HCl
edit: ummmmm- this was late at night, and I don't know what I was thinking.
Looking at one of these should help you:
http://wine1.sb.fsu.edu/chm1045/notes/Forces/Phase/h2ophase.gif
http://wine1.sb.fsu.edu/chm1045/notes/Forces/Phase/Forces06.htm
Not the best page, but its a start.
1) What is the magnitude of a?
use the Pythagorean theorem. since you are given the vectors in component form, we have a right triangle and the magnitude is the hypotenuse
[squ](7.42+6.92)
2. given x and y, we know tangent. tan b = by /bx
so arctan(y/x)=angle
and look to see...